Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-256 A Laurel MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-256 0 Laurel MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2007-11-16   
301-256 1 Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2010-07-12   
301-256 2 Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2010-07-12   
301-256 3 Laurel MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-256 4 Laurel MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 236   2005-01-08   
301-256 5 Laurel MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 236   2004-11-06   
301-256 6 Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2010-03-07   
301-256 7 Laurel MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 236   2005-05-27   
301-256 8 Laurel MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 236   2005-07-15   
301-256 9 Laurel MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

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